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Persistent URL http://purl.org/net/epubs/work/35281
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Record Id 35281
Title Oxide muonics: A new compendium
Abstract A new survey of muonium states brings the total of binary non-magnetic oxides studied to 30, with normal muonium?the interstitially trapped atomic state?found in 15 of these. The number of shallow-donor states of the type known in ZnO now also totals 15, but there are hints of several others. Tantalizingly, the shallow-donor and deep-atomic states are found to coexist in several of the candidate high-permittivity dielectrics. Highly anisotropic states, resembling anomalous muonium in semiconductors and including examples of muonium trapped at oxygen vacancies, complete a spectrum of hyperfine parameters covering five powers of ten. Effective ionization temperatures range from 10 K for shallow to over 1000 K for deep states, with corresponding activation energies between several meV and several eV. The oxide band gap emerges as a parameter controlling the systematics of the deep-to-shallow transition for muonium and, by inference, monatomic hydrogen.
Keywords Physics , Materials , 77.84.Bw; 71.55.Gs; 31.30.Gs; 36.10.Dr; 76.75.+i , ISIS 2006
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Language English (EN)
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Journal Article Physica B 374-375 (2006): 379-382. Is in proceedings of: Tenth International Conference on Muon Spin Rotation, Relaxation and Resonance (muSR2005), Oxford, UK, 8-12 Aug 2005. doi:10.1016/j.physb.2005.11.106 2006